Nonirritating antitartar and antiplaque oral compositions
CA 2092274 A1 · Owner: Unilever Plc · Inventors: Elliott, David L.; Patrick, Esther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and composition for controlling tartar and plaque formation in the mouth is reported which has a relatively low irritation to the mucosae. The oral composition includes (1) a hypophosphite-containing cotelomer in an amount effective for controlling tartar; and (2) an antibacterial agent selected from the group consisting of diphenyl ethers bis-biguanides, halogenated carbanilides and salicylamides.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 23, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.